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You can figure out which drink is yours by the bluges’ state on the bottle you have combined when you doing sports outside. It is easily remembered, recognized and manufactured. With three bluges, you can make 8 combinations, which is enough in general circumstances. Apart from this, with the type and quantity you have drunk, you can almost distinguish your drink from others in each case.You can even quickly confirm whether it is yours through the palm pressure when you hold the bottleneck, not even to see, which makes you rest assured to drink with a minimum of time.